string dateTime1 = DateTime.Now.ToString("D");Console.WriteLine(dateTime1);//2月24日string dateTime2 = DateTime.Now.ToString("d");Console.WriteLine(dateTime2);///2/24string dateTime3 = DateTime.Now.ToString("F");Console.WriteLine(dateTime3);//2月24日 14:50:07string dateTime4 = DateTime.Now.ToString("f");Console.WriteLine(dateTime4);//2月24日 14:50string dateTime5 = DateTime.Now.ToString("G");Console.WriteLine(dateTime5);///2/24 14:50:07string dateTime6 = DateTime.Now.ToString("g");Console.WriteLine(dateTime6);///2/24 14:50string dateTime7 = DateTime.Now.ToString("T");Console.WriteLine(dateTime7);//14:50:07string dateTime8 = DateTime.Now.ToString("t");Console.WriteLine(dateTime8);//14:50string dateTime9 = DateTime.Now.ToString("U");Console.WriteLine(dateTime9);//2月24日 6:50:07string dateTime10 = DateTime.Now.ToString("u");Console.WriteLine(dateTime10);//-02-24 14:50:07Zstring dateTime11 = DateTime.Now.ToString("m");Console.WriteLine(dateTime11);//2月24日string dateTime12 = DateTime.Now.ToString("M");Console.WriteLine(dateTime12);//2月24日string dateTime13 = DateTime.Now.ToString("r");Console.WriteLine(dateTime13);//Thu, 24 Feb 14:50:07 GMTstring dateTime14 = DateTime.Now.ToString("R");Console.WriteLine(dateTime14);//Thu, 24 Feb 14:50:07 GMTstring dateTime15 = DateTime.Now.ToString("y");Console.WriteLine(dateTime15);//2月string dateTime16 = DateTime.Now.ToString("Y");Console.WriteLine(dateTime16);//2月string dateTime17 = DateTime.Now.ToString("o");Console.WriteLine(dateTime17);//-02-24T14:50:07.6460955+08:00string dateTime18 = DateTime.Now.ToString("O");Console.WriteLine(dateTime18);//-02-24T14:50:07.6460955+08:00string dateTime19 = DateTime.Now.ToString("s");Console.WriteLine(dateTime19);//-02-24T14:50:07string dateTime20 = DateTime.Now.ToString("yyyy-MM-dd HH：mm：ss：ffff");Console.WriteLine(dateTime20);//022-02-24 14：50：07：6471string dateTime21 = DateTime.Now.ToString("yyyy年MM月dd HH时mm分ss秒");Console.WriteLine(dateTime21);//02月24 14时50分07秒string dateTime22 = DateTime.Now.ToString("dddd, MMMM dd yyyy");Console.WriteLine(dateTime22);//星期四, 二月 24 string dateTime23 = DateTime.Now.ToString("ddd, MMM d \"'\"yy");Console.WriteLine(dateTime23);//周四, 2月 24 '22string dateTime24 = DateTime.Now.ToString("dddd, MMMM dd");Console.WriteLine(dateTime24);//星期四, 二月 24string dateTime25 = DateTime.Now.ToString("M/yy");Console.WriteLine(dateTime25);//2/22string dateTime26 = DateTime.Now.ToString("dd-MM-yy");Console.WriteLine(dateTime26);//24-02-22string[] Day = new string[] { "星期日", "星期一", "星期二", "星期三", "星期四", "星期五", "星期六" };// 昨天string dateTime27 = DateTime.Now.AddDays(-1).ToShortDateString();Console.WriteLine(dateTime27);///2/23// 明天string dateTime28 = DateTime.Now.AddDays(1).ToShortDateString();Console.WriteLine(dateTime28);///2/25//本周星期天string dateTime29 = DateTime.Now.AddDays(Convert.ToDouble((0 - Convert.ToInt16(DateTime.Now.DayOfWeek)))).ToShortDateString();Console.WriteLine(dateTime29);///2/20//本周星期六string dateTime30 = DateTime.Now.AddDays(Convert.ToDouble((6 - Convert.ToInt16(DateTime.Now.DayOfWeek)))).ToShortDateString();Console.WriteLine(dateTime30);///2/26//今天周几string dateTime31 = Day[Convert.ToInt16(DateTime.Now.DayOfWeek)];Console.WriteLine(dateTime31);//星期四//上周日string dateTime32 = DateTime.Now.AddDays(Convert.ToDouble((0 - Convert.ToInt16(DateTime.Now.DayOfWeek))) - 7).ToShortDateString();Console.WriteLine(dateTime32);///2/13//上周六string dateTime33 = DateTime.Now.AddDays(Convert.ToDouble((6 - Convert.ToInt16(DateTime.Now.DayOfWeek))) - 7).ToShortDateString();Console.WriteLine(dateTime33);///2/19// 下周日string dateTime34 = DateTime.Now.AddDays(Convert.ToDouble((0 - Convert.ToInt16(DateTime.Now.DayOfWeek))) + 7).ToShortDateString();Console.WriteLine(dateTime34);///2/27// 下周六string dateTime35 = DateTime.Now.AddDays(Convert.ToDouble((6 - Convert.ToInt16(DateTime.Now.DayOfWeek))) + 7).ToShortDateString();Console.WriteLine(dateTime35);///3/5// 本月一号string dateTime36 = DateTime.Now.ToString("yyyy-MM-01");Console.WriteLine(dateTime36);//-02-01// 本月最后一天string dateTime37 = DateTime.Parse(DateTime.Now.ToString("yyyy-MM-01")).AddMonths(1).AddDays(-1).ToShortDateString();Console.WriteLine(dateTime37);///2/28// 上个月一号string dateTime38 = DateTime.Parse(DateTime.Now.ToString("yyyy-MM-01")).AddMonths(-1).ToShortDateString();Console.WriteLine(dateTime38);///1/1//下个月一号string dateTime39 = DateTime.Parse(DateTime.Now.ToString("yyyy-MM-01")).AddMonths(1).ToShortDateString();Console.WriteLine(dateTime39);///3/1Console.ReadKey();
代码执行结果
